ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Competitive strategies and new technology: an empirical investigation in the UK polymer processing industry (1996)
    Oxford, UK : Blackwell Publishing Ltd
    R & D management 26 (1996), S. 0 
    Details
    ISSN: 1467-9310
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
    Notes: This paper examines how companies can achieve competitive advantage by fitting their business strategies to the way in which new technology implementation is managed. In particular, the inter-relationship between strategy, technology and performance is examined. Five strategic types and seven types of technological objectives were used to find combinations which were associated with high performance. It was found that companies pursuing a prospector strategy (a strategy based on product innovation) combined with technological objectives emphasizing marketing, image and technical development were the highest performing group of companies. The lowest performing companies were those where strategy was dominated by price competition.The general conclusion of the paper is that, in order to achieve competitive advantage, companies need to see technology objectives as an inherent part of strategy. The study was carried out on a sample of twenty companies within the polymer processing industry, but the findings should be applicable to companies in other industries, and particularly to smaller companies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1467-9310.1996.tb00969.x
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Documents in Chinese from the Chinese Secretary's Office, British Legation, Peking, 1861–1939 (1983)
    Cambridge : Cambridge University Press
    Modern Asian studies 17 (1983), S. 239-255 
    Details
    ISSN: 0026-749X
    Source: Cambridge Journals Digital Archives
    Topics: Ethnic Sciences , History , Political Science , Economics
    Notes: In 1959 a collection of over twenty thousand Chinese-language documents, previously kept in the rambling Peking compound which had housed the British Legation (latterly, British Embassy) since 1861, was transmitted to the Public Record Office in London. It was given the class title Papers in the Chinese Language and the class number FO 682. The documents, some of which were rumoured to have been lying among the rafters of the Legation chapel, arrived in a state of confusion. Early attempts at listing reflected rather than resolved the confusion, but the documents are in fact far from being the trackless jumble sometimes supposed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1017/S0026749X00015626
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    The plastic deformation behaviour of linear polyethylene and polyoxymethylene (1978)
    Springer
    Journal of materials science 13 (1978), S. 1957-1970 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The plastic deformation behaviour of linear polyethylene and polyoxmethylene has been studied as a function of strain rate over a very wide range of plastic strains (deformation ratios up to ∼ 25). The results have been examined in terms of the concept of a true stress-strain-strain rate relationship. It has been shown that results for drawn fibres and extruded rods are compatible on this basis, and true stress-strain-strain rate surfaces can be defined. The significance of these results with regard to both tensile drawing and hydrostatic extrusion processes is considered. A preliminary discussion of the rate dependence is also presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00552903
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    An analysis of the mechanics of solid phase extrusion of polymers (1980)
    Springer
    Journal of materials science 15 (1980), S. 359-375 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract An analysis is presented for the mechanics of the hydrostatic extrusion of polymers in the solid phase through a conical die. The analysis starts with the lower bound solution proposed by Hoffman and Sachs and includes the effects of strain, strain rate and pressure on the deformation behaviour. It is proposed that this involves knowledge of the tensile stress-strain-strain rate relationships for each polymer, and it is shown how such information for polyethylene and polyoxymethylene can be used to explain the observed behaviour of these materials in the solid-phase extrusion process.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02396784
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    An analysis of the mechanics of solid phase extrusion of polymers (1980)
    Springer
    Journal of materials science 15 (1980), S. 359-375 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract An analysis is presented for the mechanics of the hydrostatic extrusion of polymers in the solid phase through a conical die. The analysis starts with the lower bound solution proposed by Hoffman and Sachs and includes the effects of strain, strain rate and pressure on the deformation behaviour. It is proposed that this involves knowledge of the tensile stress-strain-strain rate relationships for each polymer, and it is shown how such information for polyethylene and polyoxymethylene can be used to explain the observed behaviour of these materials in the solid-phase extrusion process.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00551687
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Neck profiles in drawn linear polyethylene (1980)
    Springer
    Journal of materials science 15 (1980), S. 2897-2914 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Neck profiles, neck propagation velocities and draw loads were measured for a series of linear polyethylene samples drawn in a tensile testing machine at 21, 75 and 100° C. The results were used to determine the profiles of strain, strain rate and draw stress in the neck. Elementary considerations show that the strain rate field in the neck relates to the strain hardening and to the strain rate sensitivity. A point of particular interest is that strain hardening appears to relate primarily to the polymer molecular weight whereas the strain rate sensitivity is more sensitive to the initial thermal treatment. The relationship of the present work to studies of true stress-true strain-true strain rate surfaces is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00550561
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Semi-automated image analysis of the true tensile drawing behaviour of polymers to large strains (1996)
    Springer
    Journal of materials science 31 (1996), S. 1843-1855 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract An image analysis system has been developed using commercially available hardware with custom software to investigate the deformation behaviour of solid polymers in uniaxial tension. This technique provides a rapid, semi-automated non-contacting method for determining true process stress-strain-strain-rate behaviour for both homogeneous and inhomogeneous deformation. The relative displacements of printed transverse grid lines are determined from images captured during a standard monotonic tensile test, providing local measures of strain. The examination of a time series of images allows the generation of true strain-rate data, and concurrent monitoring of the total draw force from the load cell allows the generation of true stress data at those times when the images are captured. Therefore, it is possible to produce a series of process uniaxial true stress-strain curves for individual “elements” of material within the gauge length of the specimen. Synthetic elastomers drawn at ambient temperature have been found to display relatively homogeneous deformation, resulting in a simple process axial stress-strain curve for the single-speed test, whereas in the case of inhomogeneous deformation (“necking”) exhibited by polypropylene, it is verified that each element of material experiences a slightly different deformation process. This spatially variant deformation is related to the original location of the particular element with respect to the point of neck initiation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00372199
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Novel reinforced reaction injection molding (RRIM) processing: Computer-controlled multiple-stream RRIM production of interpenetrating polymer networks and polyurethanes (1987)
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 27 (1987), S. 1209-1215 
    Details
    ISSN: 0032-3888
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: A four-stream computer-controlled reinforced reaction injection molding (RRIM) machine has been developed that attains high accuracy in dispense ratios throughout the injection period. This machine has been used for novel processing of polyurethanes, offering a route to varying product properties either throughout a shot or on a shotto-shot basis. It also has been used for what appears to be the first production on commercial scale RRIM equipment of a polyurethane-acrylic interpenetrating polymer network (IPN) in commercial cycle times of around 2 min.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pen.760271602
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Die drawing: Solid phase drawing of polymers through a converging die (1981)
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 21 (1981), S. 612-618 
    Details
    ISSN: 0032-3888
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Die drawing, a new process for the production of oriented thermoplastic rods with an ultrahigh modulus of elasticity, involves drawing an isotropic workpiece through a converging die at temperatures below the polymer melting point. Die drawing of polypropylene is described, but the process is applicable to any polymer which can be drawn by conventional means. The considerable advantages of die drawing compared with conventional tensile drawing and hydrostatic or ram extrusion are discussed.
    Additional Material: 12 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pen.760211007
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Hydrostatic extrusion of polyoxymethylene (1978)
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Physics Edition 16 (1978), S. 2031-2047 
    Details
    ISSN: 0098-1273
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The hydrostatic extrusion behavior of polyoxymethylene (POM) is described. Extrusions were performed at 164°C for a range of different molecular weight grades. Excellent unflawed lengths of extrudate were obtained with axial Young's moduli, measured at room temperature, reaching values as high as 24 GPa. The extrusion characteristics are discussed in terms of the very strong dependence of the flow stress of POM on strain and strain rate and pressure. In addition to measurements of Young's modulus over a wide temperature range, data for shear modulus and transvers modulus are also presented. A limited amount of other structural measurements is presented.
    Additional Material: 16 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1978.180161112
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...